Targeted sections of the Augusta Highway between Redhill and Snowtown have been identified by the State government for major resurfacing works and will be funded as part of a $250m Princes Highway Corridor Upgrade.
Independent Frome MP Geoff Brock has called this announcement a "win" after sustained lobbying.
"I am extremely pleased to hear the news that these upgrades will occur," Mr Brock said.
"I have been lobbying hard for this essential highway upgrading work and wrote to Minister Infrastructure and Transport Corey Wingard in early August, after he took on his new role, to again bring this matter to his department's attention."
The section of the highway between Redhill and Snowtown has long become a growing safety issue for road users.
"The number of tourists that are now travelling along this route to enjoy northern South Australia as a holiday destination has increased traffic volume and contributed to the deterioration of the road surface - becoming a significant issue for those towing caravans on the undulating surface," Mr Brock said.
"The increased tourism activity coupled with ever increasing numbers of heavy transport vehicles to the Eyre Peninsula and Upper Spencer Gulf as well as the resources sector in the north of the State have resulted in the highway requiring urgent rehabilitation.
"I welcome the advice that the Department is working on scoping details for this section of the road and the collaboration of funding between the Australian and State Governments.
"The Princes Highway Corridor Upgrade also includes $80 million to commence the duplication of the Augusta Highway and other safety improvements including overtaking lanes, intersection improvements and rest areas."